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参数资料
| 型号： | DS2117MB |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Bus Terminator |
| 英文描述： | 9-LINE 52 ohm SCSI BUS TERMINATOR, PDSO36 |
| 封装： | SSOP-36 |
| 文件页数： | 1/9页 |
| 文件大小： | 265K |
| 代理商： | DS2117MB |
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090199
FEATURES
§ Fully compliant with Ultra2, Ultra3, and
Ultra 160/m SCSI
§ Provides Multimode Low Voltage
Differential/Single-Ended (LVD/SE)
termination for 9 signal line pairs
§ Auto-selection of LVD or SE termination
§ 5% tolerance on SE and LVD termination
resistance
§ Low power down capacitance of 3 pF
§ Onboard thermal shutdown circuitry
§ SCSI bus hot plug compatible
§ Fully supports actively negated SE SCSI
signals
PIN ASSIGNMENT
DESCRIPTION
The DS2117M Ultra3 LVD/SE SCSI Terminator is both a Low Voltage Differential (LVD) and Single-
Ended (SE) terminator. The multimode operation enables the designer to implement LVD in current
products while allowing the end-user SE backward compatibility with legacy devices. If the device is
connected in an LVD-only bus, the DS2117M will use LVD termination. If any SE devices are connected
to the bus, the DS2117M will use SE termination. This is accomplished automatically inside the part by
sensing the voltage on the SCSI bus DIFFSENS line.
For the LVD termination, the DS2117M integrates two current sources with nine precision resistor
strings. For the SE termination, one regulator and nine precision 110-ohm resistors are used. Three
DS2117M terminators are needed for a wide SCSI bus.
DS2117M
Ultra3 LVD/SE SCSI Terminator
www.dalsemi.com
32
35
34
33
31
30
29
28
27
26
25
24
LVD
SE
R9N
R8N
R8P
HS GND
R7N
R7P
R6N
R9P
NC
R1P
R1N
R2N
HS GND
R3P
R3N
R4P
R4N
R2P
DS2117MB 36-Pin SSOP
36
23
VREF
NC
TPWR
HVD
HS GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
22
21
20
19
R5P
R5N
ISO
GND
DIFF_CAP
DIFFSENSE
MSTR/SLV
R6P
相关PDF资料 |
PDF描述 |
|---|---|
| DS2118M | 9-LINE SCSI BUS TERMINATOR, PDSO36 |
| DS2119ME | 9-LINE 52 ohm SCSI BUS TERMINATOR, PDSO28 |
| DS2154LN | DATACOM, FRAMER, PQFP100 |
| DS2155GN | DATACOM, FRAMER, PBGA100 |
| DS2155L | DATACOM, FRAMER, PQFP100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2117MB/T&R | 制造商:Maxim Integrated Products 功能描述:IC TERM SCSI LVD/SE ULT-3 36SSOP |
| DS2117MB/T&R | 功能描述:SCSI 接口集成电路 RoHS:否 制造商:Texas Instruments 工作电源电压:2.7 V to 5.25 V 电源电流:13 mA 最大工作温度:+ 70 C 最小工作温度:0 C 安装风格:SMD/SMT 封装 / 箱体:SSOP-36 封装:Tube |
| DS2117MB/T&R/ | 功能描述:SCSI 接口集成电路 RoHS:否 制造商:Texas Instruments 工作电源电压:2.7 V to 5.25 V 电源电流:13 mA 最大工作温度:+ 70 C 最小工作温度:0 C 安装风格:SMD/SMT 封装 / 箱体:SSOP-36 封装:Tube |
| DS2117MX/T&R | 制造商:Maxim Integrated Products 功能描述:IC TERM SCSI LVD/SE ULT-3 FCHIP |
| DS2117MX/T&R | 功能描述:IC TERM SCSI LVD/SE ULT-3 FCHIP RoHS:否 类别:集成电路 (IC) >> 接口 - 信号终端器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:SCSI，SE 端子数:9 电源电压:4 V ~ 5.25 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:管件 |
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